Pump and valve for liquid dispensing devices



Marbh 5, 1935.

H, T. BAGGETT ET AL PUMP AND VALVE FOR LIQUID DISPENSING DEVICES Filed May 28.- 1934 I Z 5 P *1 5 20; E I? 7 l9 5 1 E 5 l6 /0 i l E 2 E 5 IIIII .W .7. fia at Jkn/ty 17. fiofiton J INVENTORS ATTORNEYS.

Patented Mar. 5, 193$ p V UNITED STATES PATENT OFFICE PUMP AND VALVE FOR LIQUID DISPENSING DEVICES Henry T. Baggett and Henry D. Bolton, Houston, Tex., assigncrs to Hughes Tool Company, Houston, Tex., a corporation of Texas Application May 28, 1934, Serial No. 727,994

'7 Claims. (01. 225-16) Our invention relates to pumps such as are The eduction tube 12 is slidably supported employed in dispensing liquid from containers adjacent its upper end by a web or partition 16 of comparatively small dimensions as for dein the nipple 7 with fluid passages therethrough. livering drinks and beverages. The upper end of the tube 12 is screwed into the v It is an object of the invention to provide a lower end of a cup s p member 17 acting as 5 pump which may be employed to increase the a valve chamber. It has a central recess, the fluid pressure in the container and which will low W Of Which has a P s e 13 therein maintain a fluid seal in the container when the arranged Off center and Connecting With the pump is not operating. tube 12.

0 Another object is to provide an outlet conduit n t lower d of t recess is a circular which will be automatically opened when the plate or disc 19 of compressible material such as delivery spout is moved into position to dispense rub Said d s is d from rotation y a the liquid. It is desired to provide an easily deeccentric pin 20 and h an Opening 21 registertachable spout or outlet tube which may be inmg with the ope serted into position and partly rotated to open Above the dise 19 is a rotary Va v m b -1.3 the valve and deliver the liquid for u e, 22 of the same outer diameter as said disc. The

The invention resides in the means for prelower end of the Valve engages the disc d venting escape'of fluid from the container when there is a passage 24 in t valve inclined from v the device is not being operated and to easily an p r recess 25 to register, When in One D open the discharge pipe to dispense the liquid tion with the passage 21 in the disc. Said valve 20 when desired. is reduced in diameter above its lower end to In the drawing herewith Fig, 1 i a tral accommodate a stuffing box 23 the gland of which vertical section through a container equipped issereWed Within the upper end of e Va ve with the invention, said container being partly ehemberbroken away. The recess 25 is tapered to fit with the tapered 25 Fig. 2 is a transverse section on the plane 22 l w end 26 0f the Outlet p n 7 w as 01' Fig. l. shown, is approximately U-shaped. The end of Fig. 3 is a detail of the device taken on the t sp u engaging w hin the valve has 9. latplane 3--3 of Fig. 1. erally extending pin 28 which. as seen in Fig. 3,

30 The container 1 here shown is of sheet metal extends entirely through the spout and p rwith the end walls 2 and 3 depressed slightly a ly 0 center, s as not who exactly diametribelow the end rims of the side walls 4. In the cally 0 the recess This P engages in upper wall 3 is a supporting ring 5 fitted through notches 29, shown in dotted lines in Fig. 1, formed an opening in said wall and extending within the in the upper end of h Valve member- Said p container a short distance. Said ring is sealed is Off center so as to avoid engaging the spout 35 in position by welding material and ha an inwith the valve in a position reversed from the wardly projecting flange 6 upon which is mounted desired position with the outlet end of the spout a pump supporting nipple 7, extending in the right direction.

Said nipple 7 has a, flange t it upper d A plate or washer 30 is welded upon the spout engaging above the packing ring 8 on th flange in such position as to engage within a recess in 40 6. A gland ring 9 is screwed in above the nipple the upp r end f h d A One side said to hold it in sealing engagement above the seal plate is cut aw y at 31 s s o p s nt two shoulring. At the lower end of the nipple is attached tiers 32 to engage With a p 33 011 t e land the pump cylinder 10, A cap membe cl th This pin limits the rotation of the valve, it being lower end of said ylind r, aid cap having an understood that the valve is open at an interrne- 45 axial opening to allow. the eduction tube 12 to diete position of said D as seen in The work therethrough. A stufiing box 13 seals about Valve a be closed y rotation of the Valve y the tube 12 in the cap. I means of the spout in either direction from said There is an outlet for the lower end of the intermediate Positioncylinder through a passage 15 to the outer pe- The tube 12 has a plunger e n within the riphery-of the cap 11. Said outlet passage disnder 10- Said plunger has a ib D 34 charges into a peripheral recess in which is fitted p d up e o y 35 by a Clamping p a e an elastic band 15 of rubber or similar material 0n the lower side-of the plunger body is a seal-- which acts as a .valve to prevent the passage. of ing ring 37 which-is adapted to engage upon the fluid inwardly to said outlet. seat 38, projecting up from the cap 11, when said 55 the valve assembly including the gland 23 and the valve chamber 17 are rotated to unscrew the same from engagement with the nipple '7. The tube and piston may then be reciprocated to pump in the air through the passage 14 past the check valve 15. The valve chamber is then againscrewed into place to bring the seal ring 37 against the seat 38 and prevent escape of air. When it is desired to dispense liquid from the container, the spout is inserted into the seat in the valve plug 22 and the valve is then rotated toopen position to allow the discharge of liquid to a glass or other container.

T'he tapered fit of the spout with the valve plug makes a tight seal therewith before the pin 28 is entirely to the bottom of the notches 29, thus allowing for a close sealing fit even after wear has occurred.

What we claim as new is:

1. A container, a pump cylinder supported therein, an eduction tube extending through said cylinder to project below the same, a plunger on said tube within said cylinder, a cap on said cylinder sealing about said tube, an air passage through said cap, means on said plunger to seal said passage, means on said tube to reciprocate the same and means to latch said plunger into position to close said seal.

2. A container, a pump cylinder supported in sealing "engagement in said container, a cap at the inner end of said cylinder, an eduction tube extending through said cylinder and fitting slidably through said cap, a plunger on said tube within said cylinder, an outlet passage through said cap, a seat about the upper end of said passage, a sealing member on said plunger adapted to engage said seat, a valve chamber at the upper end of said tube, said valve chamber being adapted to be screwed into position to force said sealing member upon said seat.

3. A container, a pump cylinder supported in sealing engagement in said container, a cap at the inner end of said cylinder, an eduction tube extending through said cylinder and fitting slidably through said cap, a plunger on said tube within said cylinder, an outlet passage through said cap, a seat about the upper end of said passage, a sealing member on said plunger adapted to engage said seat, and means at the upper end of said tube associated with said cylinder to engage said tube in position with said sealing member closing said passage.

4. The combination of a container, a cylinder projecting therein and having a sealing engage- -ment therewith, a cap closing the inner end or said cylinder, an eduction tube extruding through said cylinder and said cap, an outlet passage from said cylinder to said container in said cap, a plunger on said tube within said cylinder, means whereby said tube and plunger may be reciprocated, and a check valve for said outlet passage comprising an elastic band held resiliently over the said outlet. 5. The combination of a container, a cylinder projecting therein and having a sealing engagement therewith, a cap closing the inner end of said cylinder, an eduction tube extruding through said cylinder and said cap, an outlet passage from said cylinder to said container in said cap, a plunger on saidtube within said cylinder, means whereby said tube and plunger may be reciprocated, a valve chamber secured to the upper end of said tube, a valve therein, and a dispensing spout on said chamber removably engaging in said chamber and adapted to rotatesaid valve, said valve chamber being detachably connected with said cylinder. r

6. A container, a pump cylinder supported in sealing engagement extending into said cylinder. an eduction tube extending through said cylinder, a plunger on said tube in said cylinder, a valve chamber detachably associated with the upper end of said cylinder and connected with said tube, a rotatable valve therein, a compressible disc below said valve in said chamber, passages through said valve, said disc and said chamber connecting with said tube, and a dispensing spout engageable in said passage to rotate said valve to bring said passages into or out of registration.

7. A container, a pump cylinder supported in sealing engagement extending into said cylinder, an eduction tube extending through said cylinder, 8. plunger on said tube in said cylinder, a valve chamber detachably associated with the upper 

